Protector for woodworking-machines.



No. 678,0I6.

- Patentd July 9,1901. J. M. A. MOWATT. PROTECTOR FUR WOODWU BKINGMACHINES;

(Application filed Jan. 2, 1901.) (No Model.)

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UNITED STATES PATENT Onricn.

JAMES M. MOVVATT AND ALEXANDER MOlVATT, OF SPRINGFIELD, OHIO.

PROTECTOR FOR WOODWORKIN G-MACHINES.

SPECIFICATION forming part of Letters Patent No. 678,016, dated July 9,1901. Application filed January 2, 1901. Serial No. 41,758. (No model.)

To aZZ whom it may concern:

' Beit known that we,JAMEs M. MoWATrand ALEXANDER MowATT, citizens ofthe United States,residin g at Springfield,county of Clark, and State-ofOhio, have invented a certain new and useful Improvement in Protectorsfor Woodworking-Machines, of which the following is a specification.

Our invention relates to a new and useful improvement in protectors forwoodworkingmachines, and has for its object to provide a protector whichwill prevent the hands of the workman from being accidentally injured bythe revolving cutters used in woodworkingmachines, such asfrizzing-machines and the like.

With this end in view this invention consists in the details ofconstruction and combination ofelements hereinafter set forth and thenspecifically designated by the claims.

In order that those skilled in the art to which this inventionappertains may understand how to make and use the same, the constructionand operation will now be described in detail, referring to theaccompanying drawings, forming a part of this specification, in which-Figure 1 is a side elevation of our invention,showin g in full lines theposition it would be placed in when the machine was operating, anddotted lines show the position it would take when it was pushed back, soas to leave the bits of the cutter accessible for sharpening oradjusting. Fig. 2 is a section taken on the line 2 2 of Fig. 1, and Fig.3 is a section taken on the line 3 3 of Fig. 1.

In carrying out our invention as here embodied, A represents astandard,which is composed of the upright member A andthe horizontalmember A This standard is secured to the bed-plate of the machine bymeans of the foot A which is formed with the upright A.

B is the. protector, which consists of the bell shaped portion 0. Thisbell O is open at its lower end and has the ringD secured to it by meansof the lugs cl,'which are formed with the ring D, and the screw d,whichpasses through the lugs and is threaded into the lower rim of the bellO. The ring D has a circular opening in its center the same siZe as thediameter of the interior opening in the bell C. The upper end of thebell O has a hub E formed therewith which is interiorly threaded.

F is a threaded rod which has the eye G formed with it upon its upperend. This eye G is adapted to surround the horizontal member A of thestandard, so as to be adjusted along said horizontal member. The bell Ois suspended by means of the screw-rod F being threaded in the hub E ofsaid bell. The horizontal member A of the standard extends directly overthe revolving cutters of the machine, and at a point on the horizontalmember A directly over the cutters a pin is placed.

When it is desired to operate the machine, the eye G is slid along themember A until the pin enters a cavity formed in the eye, which willcenter the protector directly over the cutters. Then the set-screw H isscrewed down, clamping theeye in place. The bell O and ring D are thenscrewed down the screwrod F until the distance between the bedplate ofthe machine and the lower surface of the ring D is just sufficient toallow the work to, pass therebetween. Then the bell O is clamped in thatposition by the nut I, which is also threaded on the screw-rod F andwill bind against the upper surface of the hub E. Then the materialcanbe passed over the cut ters and the work accomplished with as goodresults as without the protector, and the hands of the operator couldnot be drawn into the cutters from any cause whatsoever. The hell 0 hasthe slots J formed therein, so that the workman can see through andobserve the grain of wood he is working upon. The openings K, formedthrough the ring D, are also for the same purpose.

When it is desired to sharpen or adjust the cutter or for another reasonto have access thereto, the nut I is loosened and the protector B isscrewed upward on the screw-rod F, and if that does not give sufficientroom the set-screw H can be loosened and the whole apparatus slidbackward to the position shown in dotted lines in Fig. 1.

The rings D are easily removed from the bell O by removing the screw(1', so that rings of larger diameter can be secured to the bell forlarger work.

Of course we do not wish to be limited to the exact construction hereshown, as slight modifications could be made without departing from thespirit of our invention.

Having thus fully described our invention, what we claim as new anduseful is- 1. A protector for woodworking machinery consisting of abell-shaped portion having a protecting-ring secured to its lower edge,a standard having a horizontal member extending directly over thecutters of the machine, a screw-rod adapted to slide along thehorizontal member of the standard, the bellshaped portion and ringadapted to be suspended by and adjustable upon said screwrod, meanslocated upon the horizontal member of the standard for stopping andcentering the movable members of the protector directly over thecutters, substantially as described and for the purpose specified 2. Incombination with an apparatus of the character described, a standardsecured to the bed-plate of the machine and having a horizontal memberextending directly over the cutters of the machine, a screw-rodsuspended from said horizontal member along which said screw-rod isadapted to be adjusted, means for centering and clamping said screw-rodin place upon the horizontal member, a shield threaded upon saidscrew-rod so as to be suspended by and adjusted vertically thereupon,consisting of a bell-shaped portion and a removable p rotecting-ringsecu red to the lower end of the bell, openings formed through thebell-shaped portion and the ring, and a lock-nut also threaded upon thescrewmember A adapted to register with and enter a cavity in the eye Gfor the purpose of stopping and centering the screw-rod directly overthe cutters, a set screw adapted to clamp the eye G in place upon thehorizontal member A a shield B consisting of the bellshaped portion 0adapted to be threaded upon the screw-rod F, and a fiat ring D removablysecured to the lower end of the bell-shaped portion 0, openings J formedthrough the walls of the bell-shaped portion 0, openings K formedthrough that portion of the ring which lies outside of the bell-shapedportion 0, and a lock-nut threaded upon the screwrod F and adapted to bebound against the bell -shaped portion C for the purpose of clamping thesame in place, substantially as described and for the purpose specified.

In testimony whereof we have hereunto affixed our signatures in thepresence of two subscribing witnesses.

JAMES M. MOWATT. ALEXANDER MOWATT.

Vitnesses:

CHAS. R. OSBORN, L. F. YOUNG.

